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Упит dcterms_subject_txt:mineral properties

395 items

  • Analiza softvera za projektovanje ESP sistema

    Aleksandar Sredojević (2024)
    U momentu kada pritisak na dnu bušotine nije dovoljan da savlada ukupne gubitke pritisaka od dna bušotine do separatora, proizvodnja pomoću ležišne energije nije više moguća i bušotina prestaje sa eruptivnim radom. Kako bi ponovo omogućili proizvodnju fluida iz bušotine, potrebno je primeniti neke od mehaničkih metoda eksploatacije. Najprimenljivije mehaničke metode eksploatacije su: gas lift (GL), dubinske pumpe sa klipnim šipkama (SRP), električne uronjene centrifugalne pumpe (ESP), zavojne pumpe (PCP) i hidraulične pumpe (HP). Jadna od tih metoda koja ...
    električna centrifugalna pumpa (ESP), proizvodnja fluida, mehaničke metode eksploatacije, Prosper, Pipesim
    ... izradu modela u Prosperu, a za IPR korišćena je takođe Vogelova metoda. & tdit FLUID Name: X-1 Description: Properties | Viscosity | Calibration | Thermal STOCK TANK PROPERTIES Watercut v |72 % GOR v |60,6 sm3/sm3 Gas specific gravity: 0,814 \Water specific gravity: | 1.02 DOD v |857 ...
    ... | G esur _E \jecionoptom - ) Fasdijecionpons — injecion vahe sydem Ahanati sabikty check: — oseMR Batve -MD oonbass |j jecsonumt ops _GAS PROPERTIES |Gs specfi graviy. ) Speciy - C Usefud modal [7 } Š puupurT ip 3 7 |ne _ Neme - hs || Measeddepfn |MNA - Wwwwwwwuii oomanee di |Cdiskonopksrs ...

  • Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

    Elnori Elmabrouk Ali Elhaddad (2015-04-16)
    Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... effluent water treatment for safe disposal by electro-flotation, Chem. Eng., J., 137, 503–509. Barre L, Sebastien S, Thierry P. (2008). Solution properties of asphaltenes, Langmuir, 24, 3709-3717. Beaudry G., Xu Pei, Cath T.Y., (2013) Forward osmosis treatment of drilling mud and fracturing wastewater ...
    ... gas lift,” Journal of Petroleum Technology, vol. 54, no. 5, p. 60. Diallo M.S., Cagin T., Faulon J.L., and Goddard W.A., (2000) Thermodynamic properties of asphaltenes: a predictive approach based on computer assisted structure elucidation and atomistic simulations, Elsevier Science, 40,103- 127 ...
    ... systems studied by high-pressure NIR spectroscopy, Energy & Fuels,16,1287-1295. Nazmul H., Rahmani G., Tadeusz D., Jacob M. (2005). Settling properties of asphaltene aggregates, Energy & Fuels, 19,1099 -1108. Nikolaou M. (2013) Computer-aided process engineering in oil and gas production, Computers ...

  • Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

    Elnori Elmabrouk Ali Elhaddad (2015-04-16)
    Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... effluent water treatment for safe disposal by electro-flotation, Chem. Eng., J., 137, 503–509. Barre L, Sebastien S, Thierry P. (2008). Solution properties of asphaltenes, Langmuir, 24, 3709-3717. Beaudry G., Xu Pei, Cath T.Y., (2013) Forward osmosis treatment of drilling mud and fracturing wastewater ...
    ... gas lift,” Journal of Petroleum Technology, vol. 54, no. 5, p. 60. Diallo M.S., Cagin T., Faulon J.L., and Goddard W.A., (2000) Thermodynamic properties of asphaltenes: a predictive approach based on computer assisted structure elucidation and atomistic simulations, Elsevier Science, 40,103- 127 ...
    ... systems studied by high-pressure NIR spectroscopy, Energy & Fuels,16,1287-1295. Nazmul H., Rahmani G., Tadeusz D., Jacob M. (2005). Settling properties of asphaltene aggregates, Energy & Fuels, 19,1099 -1108. Nikolaou M. (2013) Computer-aided process engineering in oil and gas production, Computers ...

  • Rule-based Automatic Multi-word Term Extraction and Lemmatization

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Biljana Lazić, Aleksandra Trtovac (2016)
    In this paper we present a rule-based method for multi-word term extraction that relies on extensive lexical resources in the form of electronic dictionaries and finite-state transducers for modelling various syntactic structures of multi-word terms. The same technology is used for lemmatization of extracted multi-word terms, which is unavoidable for highly inflected languages in order to pass extracted data to evaluators and subsequently to terminological e-dictionaries and databases. The approach is illustrated on a corpus of Serbian texts from ...
    term extraction, terminology, multi-word units, lemmatization, finite-state transducers
    ... the Serbian e-dictionary of general multi-word units (MWUs) are classified according to their syntactic structure and inflectional and other properties (omission of a constituent, reverse order, exchangeability of constituent separators, etc.). Class names correspond to FSTs used for inflection ...

  • Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering

    Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić (2020)
    γ-spectrometry, brushite, chukhrovite, phosphogypsum, radionuclides, recrystallization
    ... noe nauchno-tehnicheskoe izdatelstvo literatur po geologii i ohrane nedr, Moscow, USSR, 868 pp. (in Russian). Milošević M. & Logar M. (2017) Properties and characterization of a clay raw material from Miličinica (Serbia) for use in the ceramic industry. Clay Minerals, 52, 329-340. Moreira R ...
    ... uranium and higher concentrations of thorium and rare earth elements (Moreira et al., 2018). The concentration of ŠO varies according to the mineral origin, from 260 to 1860 Bq kg for apatite and from 460 to 640 Bq kg for phosphorite (Saueia, 1998). Through the manufacturing process, ~80% of ...
    ... powders in the range 4-60%0 with a scanning step of 1* min ". The tube current was set to 30 mA and the voltage to 40 kV. The identification of mineral phases followed the criteria recommended by Mikheev (1957) and the Joint Committee for Powder Diffraction Standards (JCPDS). Whiteness index ...

  • Strukture kristala - odabrana poglavlja iz kristalografije i njena multidisciplinarnost

    Ljiljana Karanović (2024)
    Kristalografija

  • Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling

    Branislav Petrović, Veljko Marinović, Zoran Stevanović (2023)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    kvalitet podzemnih voda, arsen, analiza rizika, Panonski Basen
    ... and Geology, Department of Hydrogeology, Belgrade, pp. 71-75, 2009. 21. MANDIĆ M., PAPIĆ P. A Contribution to the Understanding of the Qualitative Properties of Groundwater in Vojvodina. Novi Sad: 14th Conference of Geologists of Serbia and Montenegro, pp. 385-390, 2005 [In Serbian]. 22. DALMACIJA B. ...
    ... researched the origin of arsenic and associated it with clay minerals. Goldberg, S. (1988) believe that arsenic can be absorbed on the surface layer of mineral clay and that in sediments with clay interbeds there is generally more arsenic than in sands and limestones [16, 17]. In most of the affected areas ...
    ... frequent causes of physicochemical non-compliance in Srem are concentra- tions of iron and manganese higher than MPC [19]. In the Srem District, the mineral content of groundwater was found to be lower than in other parts of Vojvodina. Total hardness measured from 5°dH to 17°dH. Concentrations of organic ...

  • Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181

    Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić (2021)
    Klizišta, Monitoring, GNSS, Geodetska osmatranja, UAV snimci, PSInSAR
    ... investigations and monitoring results until 2005 can be found in Mitrović and Jelisavac (2006). Geometry, geological settings, mechanism and material properties of Umka landslide were well defined by previous geotechnical investigations. This landslide is fan-shaped, with the length along the slope of 900 ...

  • Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions

    Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)
    A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...
    Ceria, Yttrium, Solid solution, Mechanosynthesis, Oxygen vacancy, Nanocrystalline material

  • Concepts for Improving Machine Learning Based Landslide Assessment

    Miloš Marjanović, Mileva Samardžić Petrović, Biljana Abolmasov, Uroš Đurić (2019)
    Katastar klizišta, Podložnost, Hazard, Mašinsko učenje, Uzorkovanje, Validacija

  • Uticaj raspadanja na stabilnost kosina u mekoj stenskoj masi

    Anđela Despotov (2024)
    U radu je opisano ponašanje mekih stenskih masa koje su izložene porecesu raspadanja tokom određenog vremenskog perioda. Meke stenske predstavljaju kritične vrste stenskih masa pošto izazivaju različite probleme tokom izvođenja građevinskih radova. Meke stene mogu biti sedimentne stene, raspadnute metamorfne i magmatske stene. Odlikuju se niskim vrednostima čvrstoće, visokom deformabilnošću, visokom plastičnošću, podložne su dezintegraciji i fizičko-hemijskom raspadanju, odnosno ubrzanom dejstvu površinskog raspadanja usled atmosferskih uticaja.Za klasifikaciju mekih stenskih masa koriste se modifikovane verzije već postojećih klasifikacionih sistema. Jedan ...
    meke stenske mase, dezintegracija, klasifikacioni sistemi, Slake durability test
    ... raspadanju dolazi do promene hemijskog sastava minerala pri čemu se stvaraju sekundarni minerali i dolazi do njihovog rastvaranja i raspadanja stenske mase. Neki minerali su podložniji hemijskim promenama usled dejstva agenasa, u odnosu na druge minerale u zavisnosti od hemijskih karakteristika i ...
    ... temperature on the mechanical properties of reservoir rocks. International Journal of Rock Mechanics and Mining Sciences, Volume 34, article id. 298.e1. 27. Sousa i dr. (1997), Experimental investigation on the influence of temperature on the mechanical properties of reservoir rocks. International ...
    ... promene njenih komponenti odnosno ona ostaje hemijski nepromenjena. Pri hemijskom raspadanju dolazi do promene hemijskog sastava minerala pri čemu se stvaraju sekundarni minerali, dolazi do njihovog rastvaranja i raspadanja stenske mase. Brzina procesa dezintegracije stenske mase je veoma promenljiva ...

  • Sorpcija herbicida na neorganski i organski modifikovanom prirodnom montmorionitu iz Bogovine

    Lazar M. Kaluđerović (2018-01-17)
    fikasnost prilikom sorpcije S-metolahlora i klomazona od strane neorganskih iorganski modifikovanih montmorionita sa lokaliteta Bogovina odreĎena je metodombach adsorpcije. Uzorci montmorionita su tretirani prvo rastvorom NaCl a zatim irazličitim koncentracijama organskih kompleksa. Adsorpcione izoterme su dobijenetretiranjem uzoraka različitim koncentracijama herbicida. Detaljna mineraloškakarakterizacija uzoraka uraĎena je metodom rendgenske difrakcije. Rezultati interakcijemontmorionita sa organskim kompleksima i herbicidima dobijeni su primenomrendgenskih, optičkih, termičkih i spektroskopskih metoda.Na osnovu rezultata rendgenskih ispitivanja uzoraka, utvrĎeno je prisustvoorganskih kompleksa i herbicida u meĎuslojnom prostoru montmorionita.Montmorioniti modifikovani ...
    adsorpcija, montmorionit, heksadeciltrimetilamonijum bromid,feniltrimetilamonijum hlorid, S-metolahlor, klomazon
    ... uključujući minerale filosilikata pomešane sa fino usitnjenim kvarcom, feldspatima, karbonatima, oksidima i hidroksidima Al i Fe i organskom materijom. Iz tog razloga hemijski sastav ne moţe direktno da ukaţe na vrstu prisutnih minerala. Prema "Clay Mineral Society", termin "minerali glina" se ...
    ... površine minerala i samog herbicida. Postoje brojna istraţivanja organske modifikacije montmorionita različitim katjonima. MeĎutim, većina ovih istraţivanja izvoĎena je na komercijalnim montmorionitima dobijenim od strane Društva za proučavanje minerala glina (eng. The Clay Mineral Society) ...
    ... odnosi na minerale podklase filosilikata koji glini daju plastičnost, a koji očvrsnu nakon sušenja ili pečenja (Guggenheim and Martin, 1995). Minerali koji se nalaze u mehaničkoj frakciji gline su minerali podklase filosilikata iz grupe smektita, kaolinit- serpentina, talk-pirofilita, vermikulita ...

  • Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    ... and Geology, Department of Hydrogeology, Belgrade, pp. 71-75, 2009. 21. MANDIĆ M., PAPIĆ P. A Contribution to the Understanding of the Qualitative Properties of Groundwater in Vojvodina. Novi Sad: 14th Conference of Geologists of Serbia and Montenegro, pp. 385-390, 2005 [In Serbian]. 22. DALMACIJA B. ...
    ... researched the origin of arsenic and associated it with clay minerals. Goldberg, S. (1988) believe that arsenic can be absorbed on the surface layer of mineral clay and that in sediments with clay interbeds there is generally more arsenic than in sands and limestones [16, 17]. In most of the affected areas ...
    ... frequent causes of physicochemical non-compliance in Srem are concentra- tions of iron and manganese higher than MPC [19]. In the Srem District, the mineral content of groundwater was found to be lower than in other parts of Vojvodina. Total hardness measured from 5°dH to 17°dH. Concentrations of organic ...

  • The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA

    Vera M. Divac, Aleksandar Mijatović, Marina D. Kostić, Jovana Bogojeski (2017)
    Serija organoselenijum trans-paladijum(II) kompleksa 1 (bis(2-(fenilselanilmetil)oksolan)dihloropaladijum(II)), 2 (bis(2-(fenilselanilmetil)oksan)dihloropaladijum(II)) i 3 (bis(2) ,2-dimetil-3-(fenilselanil)oksan)dihloropaladijum(II)) su korišćeni za ispitivanje reaktivnosti ovog specifičnog tipa kompleksa prema različitim bio-molekulima. Ovaj sistem je od posebnog interesa jer se jako malo zna o supstitucionim reakcijam organoselenijum paladijum(II) kompleksa sa trans konfiguracijom. Zamena koordinovanog hlorida sa serijom malih bio-molekula (l-Met, l-His, l-Cis, GSH i 5′-GMP) proučavana je pod uslovima pseudo-prvog reda kao funkcija koncentracije nukleofila i temperature korišćenjem tehnika zaustavljenog toka. Rezultati za proučavane komplekse ukazuju da ...
    Pd(II), Selen, Substitucija, Kinetika, Mehanizam

  • Vebran Web Services for Corpus Query Expansion

    Ranka Stanković, Miloš Utvić (2020)
    U ovom radu se govori o razvoju veb usluga Vebran i njihovoj primeni u poboljšanju pretraživanja korpusa. Veb-servisi Vebran koriste se za konsultovanje spoljnih leksičkih izvora za srpski jezik (uglavnom elektronski morfološki rečnici i srpski Vordnet) i proširivanje korisničkih upita radi dobijanja relevantnijih rezultata iz srpskih korpusa.
    corpus search, web service, Serbian lexical resources, query expansion
    ... geological vocabularies, collections of terms and text definitions of entities thought to exist in a domain or collections of possible values for properties. The terms in the vocabularies are used to classify observations/interpretations, or to specify attribute values. GeolISSTerm is organized as a taxonomy ...

  • Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia

    Bojan Kostić, Danica Srećković-Batoćanin, Petyo Filipov, Pavle Tančić, Kristijan Sokol (2021)
    This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying anisotropy and zoning. In spite of wide compositional variations the garnets near the end-member of andradite (Adr > 90) are generally isotropic. Fe-rich rims exhibit LREE depletion and flat HREE pattern with weak negative Eu anomaly, including higher As and W contents. On the other side, the Fe-poorer core shows flat REE pattern ...
    grandite, garnets, skarn, Rudnik
    ... using natural and synthetic mineral standards including albite (Al, Si), wollastonite (Ca), titanium monoxide (Ti), chromium oxide (Cr), and manganese (Mn) and iron (Fe) metal. Backscattered (BSE) images were used to reveal zoning and possibly inclu- sions of another mineral phase within the garnet and ...
    ... follow Ca concentrations if the reaction for garnet growth involves epidote mineral consumption. Thus, the sharp decrease of grossular component from core to rim in garnet SN-310 could reflect epidote consumption from the mineral assemblage. Stable Ca concentration values in Fe-rich and Fe-poor garnet ...
    ... positive Eu anomaly form by rapid growth from magmatic derived fluids. The studied garnets from Rudnik coincide with the above described optical properties but their REE pattern is quite different. The Al-rich core displays flat REE pattern, whereas the Fe-rich rim is LREE depleted. Both zones display ...

  • Trace elements and garnet formation in a distal skarn zone: a case study of the Rudnik deposit, Central Serbia

    Bojan Kostić, Pavle Tančić, Natalija Batoćanin (2024)
    geohemija granata, retke zemlje, fluidne inkluzije, skarnovsko ležište Rudnik

  • A Data Driven Approach for Raw Material Terminology

    Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja (2021)
    The research presented in this paper aims at creating a bilingual (sr-en), easily searchable, hypertext, born-digital, corpus-based terminological database of raw material terminology for dictionary production. The approach is based on linking dictionaries related to the raw material domain, both digitally born and printed, into a lexicon structure, aligning terminology from different dictionaries as much as possible. This paper presents the main features of this approach, data used for compilation of the terminological database, the procedure by which it has ...
    sirovine, rudarstvo, terminologija, rečnik, terminološka aplikacija, mobilna aplikacija, digitizacija, leksički podaci, korpusi, otvoreni povezani podaci
    ... other disciplines. There is also a small bilingual dictionary of mineral processing [17] with 2415 transla- tion pairs, in both directions, English to Serbian and Serbian to English, but also without definitions. Finally, a glossary of mineral processing terms with 1400 definitions in Serbian is used at ...
    ... by a subdomain marker, as for example, entries related to mineral processing (251), transport (243), or underground mining (469). Additional semantic labels were also assigned, for example, material (699), device (536), machine (384), mineral (313), facility (288), instrument (279), etc. The part-of-speech ...
    ... identification systems. Appl. Sci. 2020, 10, 1726. [CrossRef] 12. Graham, R.L. Dictionary of Mining, Mineral & Related Terms; US Bureau of Mines: Washington, DC, USA, 1996. 13. Dictionary of Mining, Mineral and Related Terms (an EduMine Tool). Available online: http://xmlwords.infomine.com/ xmlwords.htm ...

  • Синтеза и карактеризација керамике на бази сфена

    Jelena R. Pantić (2015-07-10)
    Механохемијска активација стехиометријске смеше реактаната TiO2, SiO2 и CaCO3 показала се као веома успешна и једноставна метода за добијање сфена (CaTiSiO5). На основу мерења релативних густина свих синтерованих узорака установљено је да максималну густину од 93,9 % имају узорци који су активирани 30 минута и синтеровани на 1200 °С. Микроструктурном анализом, тј. анализом слика синтерованих узорака активираних 30 минута, које су добијене скенирајућом електронском микроскопијом, опажа се бимодална расподела величине зрна, са просечном величином од 3 μm, односно 5 ...
    сфен, механохемија, Ритвелдова метода, оптичка спектроскопија, микроструктурна анализа, фазна трансфоpмација, чврсти раствори
    ... and Pecora W.T. (1955) Tavorite and barbosalite, two new phosphate minerals from Minas Gerais, Brazil Am Mineral 40: 952-966. Longo J.M. and Arnott R.J. (1970) Structure and magnetic properties of VOSO4. J Solid State Chem L: 394-398. Longo J.M. and Kierkegaard P. (1966) The crystal structure ...
    ... of perovskite and titanite. Can Mineral 22: 689-694. Muthuraman M., Dhas N.A. and Patil K.C. (1994) Combustion synthesis of oxide materials for nuclear waste immobilization. Bull Mater Sci 17: 977-987. Muthuraman M. and Patil K.C. (1998) Synthesis, properties, sintering and microstructure of ...
    ... octahedral silicon in calcium silicate, CaSi2O5. Am Mineral 82: 836-839. Angel R.J., Kunz M., Miletich R., Woodland A.B., Koch M. and Knoche R.L. (1999a) Effect of isovalent Si, Ti substitution on the bulk moduli of Ca(Ti1-xSix)SiO5 titanites. Am Mineral 84: 282-287. Angel R.J., Kunz M, Miletich R ...